source: mainline/console/console.c@ 290c0db

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 290c0db was 290c0db, checked in by Ondrej Palkovsky <ondrap@…>, 19 years ago

Update to new api.
Fixed problem with hanged up phone when pressing keys during
graphics initialization.
  • Property mode set to 100644
File size: 13.3 KB
Line 
1/*
2 * Copyright (C) 2006 Josef Cejka
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @defgroup console Console
30 * @brief HelenOS console.
31 * @{
32 */
33/** @file
34 */
35
36/* TODO: remove */
37#include <stdio.h>
38
39
40#include <kbd.h>
41#include <fb.h>
42#include <ipc/ipc.h>
43#include <ipc/fb.h>
44#include <ipc/services.h>
45#include <errno.h>
46#include <key_buffer.h>
47#include <console.h>
48#include <unistd.h>
49#include <async.h>
50#include <libadt/fifo.h>
51#include <screenbuffer.h>
52#include <sys/mman.h>
53
54#include "gcons.h"
55
56#define MAX_KEYREQUESTS_BUFFERED 32
57
58#define NAME "CONSOLE"
59
60/** Index of currently used virtual console.
61 */
62int active_console = 0;
63
64/** Information about framebuffer
65 */
66struct {
67 int phone; /**< Framebuffer phone */
68 ipcarg_t rows; /**< Framebuffer rows */
69 ipcarg_t cols; /**< Framebuffer columns */
70} fb_info;
71
72
73typedef struct {
74 keybuffer_t keybuffer; /**< Buffer for incoming keys. */
75 FIFO_CREATE_STATIC(keyrequests, ipc_callid_t , MAX_KEYREQUESTS_BUFFERED); /**< Buffer for unsatisfied request for keys. */
76 int keyrequest_counter; /**< Number of requests in buffer. */
77 int client_phone; /**< Phone to connected client. */
78 int used; /**< 1 if this virtual console is connected to some client.*/
79 screenbuffer_t screenbuffer; /**< Screenbuffer for saving screen contents and related settings. */
80} connection_t;
81
82static connection_t connections[CONSOLE_COUNT]; /**< Array of data for virtual consoles */
83static keyfield_t *interbuffer = NULL; /**< Pointer to memory shared with framebufer used for faster virt. console switching */
84
85static int kernel_pixmap = -1; /**< Number of fb pixmap, where kernel console is stored */
86
87
88/** Find unused virtual console.
89 *
90 */
91static int find_free_connection(void)
92{
93 int i = 0;
94
95 for (i=0; i < CONSOLE_COUNT; i++) {
96 if (!connections[i].used)
97 return i;
98 }
99 return -1;
100}
101
102static void clrscr(void)
103{
104 async_msg(fb_info.phone, FB_CLEAR, 0);
105}
106
107static void curs_visibility(int v)
108{
109 async_msg(fb_info.phone, FB_CURSOR_VISIBILITY, v);
110}
111
112static void curs_goto(int row, int col)
113{
114 async_msg_2(fb_info.phone, FB_CURSOR_GOTO, row, col);
115
116}
117
118static void set_style(style_t *style)
119{
120 async_msg_2(fb_info.phone, FB_SET_STYLE, style->fg_color, style->bg_color);
121}
122
123static void set_style_col(int fgcolor, int bgcolor)
124{
125 async_msg_2(fb_info.phone, FB_SET_STYLE, fgcolor, bgcolor);
126}
127
128static void prtchr(char c, int row, int col)
129{
130 async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
131
132}
133
134/** Check key and process special keys.
135 *
136 * */
137static void write_char(int console, char key)
138{
139 screenbuffer_t *scr = &(connections[console].screenbuffer);
140
141 switch (key) {
142 case '\n':
143 scr->position_y += 1;
144 scr->position_x = 0;
145 break;
146 case '\r':
147 break;
148 case '\t':
149 scr->position_x += 8;
150 scr->position_x -= scr->position_x % 8;
151 break;
152 case '\b':
153 if (scr->position_x == 0)
154 break;
155
156 scr->position_x--;
157
158 if (console == active_console)
159 prtchr(' ', scr->position_y, scr->position_x);
160
161 screenbuffer_putchar(scr, ' ');
162
163 break;
164 default:
165 if (console == active_console)
166 prtchr(key, scr->position_y, scr->position_x);
167
168 screenbuffer_putchar(scr, key);
169 scr->position_x++;
170 }
171
172 scr->position_y += (scr->position_x >= scr->size_x);
173
174 if (scr->position_y >= scr->size_y) {
175 scr->position_y = scr->size_y - 1;
176 screenbuffer_clear_line(scr, scr->top_line);
177 scr->top_line = (scr->top_line+1) % scr->size_y;
178 if (console == active_console)
179 async_msg(fb_info.phone, FB_SCROLL, 1);
180 }
181
182 scr->position_x = scr->position_x % scr->size_x;
183
184 if (console == active_console)
185 curs_goto(scr->position_y, scr->position_x);
186
187}
188
189/** Save current screen to pixmap, draw old pixmap
190 *
191 * @param oldpixmap Old pixmap
192 * @return ID of pixmap of current screen
193 */
194static int switch_screens(int oldpixmap)
195{
196 int newpmap;
197
198 /* Save screen */
199 newpmap = async_req(fb_info.phone, FB_VP2PIXMAP, 0, NULL);
200 if (newpmap < 0)
201 return -1;
202
203 if (oldpixmap != -1) {
204 /* Show old screen */
205 async_msg_2(fb_info.phone, FB_VP_DRAW_PIXMAP, 0, oldpixmap);
206 /* Drop old pixmap */
207 async_msg(fb_info.phone, FB_DROP_PIXMAP, oldpixmap);
208 }
209
210 return newpmap;
211}
212
213/** Switch to new console */
214static void change_console(int newcons)
215{
216 connection_t *conn;
217 static int console_pixmap = -1;
218 int i, j, rc;
219 keyfield_t *field;
220 style_t *style;
221 char c;
222
223 if (newcons == active_console)
224 return;
225
226 if (newcons == KERNEL_CONSOLE) {
227 if (active_console == KERNEL_CONSOLE)
228 return;
229 active_console = KERNEL_CONSOLE;
230 curs_visibility(0);
231
232 if (kernel_pixmap == -1) {
233 /* store/restore unsupported */
234 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
235 clrscr();
236 } else {
237 gcons_in_kernel();
238 console_pixmap = switch_screens(kernel_pixmap);
239 kernel_pixmap = -1;
240 }
241
242 __SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
243 return;
244 }
245
246 if (console_pixmap != -1) {
247 kernel_pixmap = switch_screens(console_pixmap);
248 console_pixmap = -1;
249 }
250 active_console = newcons;
251 gcons_change_console(newcons);
252 conn = &connections[active_console];
253
254 set_style(&conn->screenbuffer.style);
255 curs_visibility(0);
256 if (interbuffer) {
257 for (i = 0; i < conn->screenbuffer.size_x; i++)
258 for (j = 0; j < conn->screenbuffer.size_y; j++)
259 interbuffer[i + j*conn->screenbuffer.size_x] = *get_field_at(&(conn->screenbuffer),i, j);
260 /* This call can preempt, but we are already at the end */
261 rc = async_req_2(fb_info.phone, FB_DRAW_TEXT_DATA, 0, 0, NULL, NULL);
262 };
263
264 if ((!interbuffer) || (rc != 0)) {
265 set_style(&conn->screenbuffer.style);
266 clrscr();
267 style = &conn->screenbuffer.style;
268
269 for (j = 0; j < conn->screenbuffer.size_y; j++)
270 for (i = 0; i < conn->screenbuffer.size_x; i++) {
271 field = get_field_at(&(conn->screenbuffer),i, j);
272 if (!style_same(*style, field->style))
273 set_style(&field->style);
274 style = &field->style;
275 if ((field->character == ' ') && (style_same(field->style, conn->screenbuffer.style)))
276 continue;
277
278 prtchr(field->character, j, i);
279 }
280 }
281
282 curs_goto(conn->screenbuffer.position_y, conn->screenbuffer.position_x);
283 curs_visibility(conn->screenbuffer.is_cursor_visible);
284}
285
286/** Handler for keyboard */
287static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
288{
289 ipc_callid_t callid;
290 ipc_call_t call;
291 int retval;
292 int c;
293 connection_t *conn;
294
295 /* Ignore parameters, the connection is alread opened */
296 while (1) {
297 callid = async_get_call(&call);
298 switch (IPC_GET_METHOD(call)) {
299 case IPC_M_PHONE_HUNGUP:
300 /* TODO: Handle hangup */
301 return;
302 case KBD_PUSHCHAR:
303 /* got key from keyboard driver */
304
305 retval = 0;
306 c = IPC_GET_ARG1(call);
307 /* switch to another virtual console */
308
309 conn = &connections[active_console];
310// if ((c >= KBD_KEY_F1) && (c < KBD_KEY_F1 + CONSOLE_COUNT)) {
311 if ((c >= 0x101) && (c < 0x101 + CONSOLE_COUNT)) {
312 async_serialize_start();
313 if (c == 0x112)
314 change_console(KERNEL_CONSOLE);
315 else
316 change_console(c - 0x101);
317 async_serialize_end();
318 break;
319 }
320
321 /* if client is awaiting key, send it */
322 if (conn->keyrequest_counter > 0) {
323 conn->keyrequest_counter--;
324 ipc_answer_fast(fifo_pop(conn->keyrequests), 0, c, 0);
325 break;
326 }
327
328 /*FIXME: else store key to its buffer */
329 keybuffer_push(&conn->keybuffer, c);
330
331 break;
332 default:
333 retval = ENOENT;
334 }
335 ipc_answer_fast(callid, retval, 0, 0);
336 }
337}
338
339/** Default thread for new connections */
340static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
341{
342 ipc_callid_t callid;
343 ipc_call_t call;
344 int consnum;
345 ipcarg_t arg1, arg2;
346 connection_t *conn;
347
348 if ((consnum = find_free_connection()) == -1) {
349 ipc_answer_fast(iid,ELIMIT,0,0);
350 return;
351 }
352 conn = &connections[consnum];
353 conn->used = 1;
354
355 async_serialize_start();
356 gcons_notify_connect(consnum);
357 conn->client_phone = IPC_GET_ARG3(call);
358 screenbuffer_clear(&conn->screenbuffer);
359
360 /* Accept the connection */
361 ipc_answer_fast(iid,0,0,0);
362
363 while (1) {
364 async_serialize_end();
365 callid = async_get_call(&call);
366 async_serialize_start();
367
368 arg1 = arg2 = 0;
369 switch (IPC_GET_METHOD(call)) {
370 case IPC_M_PHONE_HUNGUP:
371 gcons_notify_disconnect(consnum);
372
373 /* Answer all pending requests */
374 while (conn->keyrequest_counter > 0) {
375 conn->keyrequest_counter--;
376 ipc_answer_fast(fifo_pop(conn->keyrequests), ENOENT, 0, 0);
377 break;
378 }
379 conn->used = 0;
380 return;
381 case CONSOLE_PUTCHAR:
382 write_char(consnum, IPC_GET_ARG1(call));
383 gcons_notify_char(consnum);
384 break;
385 case CONSOLE_CLEAR:
386 /* Send message to fb */
387 if (consnum == active_console) {
388 async_msg(fb_info.phone, FB_CLEAR, 0);
389 }
390
391 screenbuffer_clear(&conn->screenbuffer);
392
393 break;
394 case CONSOLE_GOTO:
395
396 screenbuffer_goto(&conn->screenbuffer, IPC_GET_ARG2(call), IPC_GET_ARG1(call));
397 if (consnum == active_console)
398 curs_goto(IPC_GET_ARG1(call),IPC_GET_ARG2(call));
399
400 break;
401
402 case CONSOLE_GETSIZE:
403 arg1 = fb_info.rows;
404 arg2 = fb_info.cols;
405 break;
406 case CONSOLE_FLUSH:
407 async_req_2(fb_info.phone, FB_FLUSH, 0, 0, NULL, NULL);
408 break;
409 case CONSOLE_SET_STYLE:
410
411 arg1 = IPC_GET_ARG1(call);
412 arg2 = IPC_GET_ARG2(call);
413 screenbuffer_set_style(&conn->screenbuffer,arg1, arg2);
414 if (consnum == active_console)
415 set_style_col(arg1, arg2);
416
417 break;
418 case CONSOLE_CURSOR_VISIBILITY:
419 arg1 = IPC_GET_ARG1(call);
420 conn->screenbuffer.is_cursor_visible = arg1;
421 if (consnum == active_console)
422 curs_visibility(arg1);
423 break;
424 case CONSOLE_GETCHAR:
425 if (keybuffer_empty(&conn->keybuffer)) {
426 /* buffer is empty -> store request */
427 if (conn->keyrequest_counter < MAX_KEYREQUESTS_BUFFERED) {
428 fifo_push(conn->keyrequests, callid);
429 conn->keyrequest_counter++;
430 } else {
431 /* no key available and too many requests => fail */
432 ipc_answer_fast(callid, ELIMIT, 0, 0);
433 }
434 continue;
435 };
436 keybuffer_pop(&conn->keybuffer, (int *)&arg1);
437
438 break;
439 }
440 ipc_answer_fast(callid, 0, arg1, arg2);
441 }
442}
443
444int main(int argc, char *argv[])
445{
446 ipcarg_t phonehash;
447 int kbd_phone, fb_phone;
448 ipcarg_t retval, arg1 = 0xdead, arg2 = 0xbeef;
449 int i;
450
451 async_set_client_connection(client_connection);
452
453 /* Connect to keyboard driver */
454
455 while ((kbd_phone = ipc_connect_me_to(PHONE_NS, SERVICE_KEYBOARD, 0)) < 0) {
456 usleep(10000);
457 };
458
459 if (ipc_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, &phonehash) != 0) {
460 return -1;
461 };
462 async_new_connection(phonehash, 0, NULL, keyboard_events);
463
464 /* Connect to framebuffer driver */
465
466 while ((fb_info.phone = ipc_connect_me_to(PHONE_NS, SERVICE_VIDEO, 0)) < 0) {
467 usleep(10000);
468 }
469
470 /* Save old kernel screen */
471 kernel_pixmap = switch_screens(-1);
472
473 /* Initialize gcons */
474 gcons_init(fb_info.phone);
475 /* Synchronize, the gcons can have something in queue */
476 async_req(fb_info.phone, FB_FLUSH, 0, NULL);
477 /* Enable double buffering */
478 async_msg_2(fb_info.phone, FB_VIEWPORT_DB, (sysarg_t)-1, 1);
479
480 async_req_2(fb_info.phone, FB_GET_CSIZE, 0, 0, &(fb_info.rows), &(fb_info.cols));
481 set_style_col(DEFAULT_FOREGROUND, DEFAULT_BACKGROUND);
482 clrscr();
483
484 /* Init virtual consoles */
485 for (i = 0; i < CONSOLE_COUNT; i++) {
486 connections[i].used = 0;
487 keybuffer_init(&(connections[i].keybuffer));
488
489 connections[i].keyrequests.head = connections[i].keyrequests.tail = 0;
490 connections[i].keyrequests.items = MAX_KEYREQUESTS_BUFFERED;
491 connections[i].keyrequest_counter = 0;
492
493 if (screenbuffer_init(&(connections[i].screenbuffer), fb_info.cols, fb_info.rows ) == NULL) {
494 /*FIXME: handle error */
495 return -1;
496 }
497 }
498 connections[KERNEL_CONSOLE].used = 1;
499
500 if ((interbuffer = mmap(NULL, sizeof(keyfield_t) * fb_info.cols * fb_info.rows , PROTO_READ|PROTO_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, 0 ,0 )) != NULL) {
501 if (async_req_3(fb_info.phone, IPC_M_AS_AREA_SEND, (ipcarg_t)interbuffer, 0, AS_AREA_READ, NULL, NULL, NULL) != 0) {
502 munmap(interbuffer, sizeof(keyfield_t) * fb_info.cols * fb_info.rows);
503 interbuffer = NULL;
504 }
505 }
506
507 curs_goto(0,0);
508 curs_visibility(connections[active_console].screenbuffer.is_cursor_visible);
509
510 /* Register at NS */
511 if (ipc_connect_to_me(PHONE_NS, SERVICE_CONSOLE, 0, &phonehash) != 0) {
512 return -1;
513 };
514
515 async_manager();
516
517 return 0;
518}
519
520/** @}
521 */
522
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